Injector



NOV. 27, 1934. 1 1 VETRANO INJECTOR Filed Feb. 28, 1933 Patented Nov. f27, 1934 UNETED STATES PATENT GFFICE 2 Claims.

This invention relates to an injector.

An object of the invention is to provide an injector of the character described whereby the eifective surface of the stream of operating iluid imay be increased in area thus decreasing the amount of operating iiuid required and increasing the efficiency thereof.

As is well known an injector utilizes a stream of operating fluid which iiows through the ini jector at high speed creating a vacuum or partial vacuum whereby the liquid or fluid to be delivered is carried through the injector and discharged at the place of delivery. The efliciency of the injector depends upon the surface area of the jstream of operating fluid and by increasing this area the eiiiciency of the injector may be increased.

It is an object of this invention to provide a core which is fixed relative to the injector nozzle ifor the purpose stated.

With the above and other objects in view the invention has particular relation to certain novel features of construction, arrangement of parts and use, an example of which is given in this .specication and illustrated in the accompanying drawing wherein:

Figure 1 shows a longitudinal sectional View of the injector, and

Figure 2 shows a cross sectional View taken on the line 2 2 of Figure l.

Referring now more particularly to the drawing wherein like numerals of reference designate similar parts in each of the Figures the numeral 1 designates the body of the injector which is substantially tubular in form and contracted at its ends.

Threaded onto one end of the body there is a flange nut 2 having the annular inwardly extending ange 3 at its outer end. This end of the body has the annular inwardly extending flange 4, spaced inwardly from the end of the body.

There is an inwardly tapering nozzle 5 whose outer end has the external annular ilange 6 which abuts the outer side of the flange 4. There is a tubular connection 7 Whose inner end abuts the ilange 6 and is provided with an external annular flange 8 which is engaged by the flange 3 whereby the connection 7 and the nozzle 5 are clamped in place. There is an inlet line 9 for the operating fluid which is screwed onto the outer end of the connection 7 and through which an operating fluid such as steam or air under pressure is supplied to the injector. Fixed within the connection 7 there is a suitable spider 10.

Screwed into the opposite end of the body there is a tubular nozzle pipe 11 whose inner end is iiared as at 12 and surrounds the inner end of the nozzle 5. This last mentioned end of the body l is threaded to receive a suitable delivery pipe. M Entering the side of body 1 there is an inlet line lli for the liquid or uid to be delivered.

As the operating iiuid is forced at high speed under pressure through the nozzle 5 and nozzle pipe l1 the liquid to be delivered will be drawn in through the inlet pipe 14 and forced out by the operating fluid. The efliciency of the invention will depend largely on the area of the surface of the stream of operating duid. For the purpose of increasing this area a core 15 has been provided. This core is located in the nozzle pipe 11 and is fixed to a stem 16 whose outer end is anchored to the spider 10. The outer or free end of the core 15 is provided with the radial spacers 17 whereby the core is held centered relative to the nozzle pipe. The end of the core adjacent the stem 16 is tapered said tapered end being surrounded by the annular nozzle opening 18. The stream of operating fluid will pass through the nozzle opening 18 and will surround the core l5 and the surface area of said stream will thus be increased thus conducing to the efliciency of the injector.

The drawing and description disclose what is now considered to be a preferred form of the invention by Way of illustration only while the broad principle of the invention will be defined by the appended claims.

What I claim is:

1. An injector comprising a tubular body having a side inlet, a nozzle extending into one end of said body and having a forwardly contracted passageway, a tubular connection abutting the outer end of the nozzle and forming means for anchoring the nozzle in place, means for clamping the connection to the end of the body, a spider in said connection, a tubular nozzle pipe secured in the other end of the body and extending inwardly beyond said side opening and whose inner end surrounds the inner end of the nozzle, said nozzle pipe having an approximately uniform passageway therethrough which is iiared at its inner end, a core located in the nozzle pipe and having its inner end tapered and extended into the nozzle, a stem anchored to said spider and to 105 which the inner end of the core is anchored the other end of the core being pointed and spacers on said vvother end of the core arranged to hold the core centered relative to the nozzle pipe.

2. An injector comprising a tubular body havllQ ing a side inlet, a nozzle extending into one end of the body and having an inwardly contracted passageway therethrough, said nozzle and body having nterengaging ilanges, a tubular connection abutting the outer end of the nozzle and clamping the nozzle flange between said connection and the body flange, means for clamping said connection to the end of the body, a spider in said-connection, a tubular nozzlefpipe -secured in the Iother end of 'the body and extending in- Wardly beyond said side opening and Whose inner LEON J. VETRANO.

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